Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
  • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
  • G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B47/00—Porphines; Azaporphines
  • C09B47/04—Phthalocyanines abbreviation: Pc
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K19/00—Liquid crystal materials
  • C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
  • C09K19/60—Pleochroic dyes
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/20—Filters
  • G02B5/22—Absorbing filters
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
  • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
  • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
  • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
  • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
  • G11B7/248—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes porphines; azaporphines, e.g. phthalocyanines
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K19/00—Liquid crystal materials
  • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
  • C09K19/06—Non-steroidal liquid crystal compounds
  • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
  • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
  • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
  • C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
  • C09K2019/122—Ph-Ph

Definitions

• This invention relates to 1,2-naphthalocyanine derivatives serving as near-infrared absorbents which are used as optoelectronic materials, as well as optical recording media, near-infrared absorption filters and display materials using such near-infrared absorbents.
• near-infrared absorbents are being used as optoelectronic materials in the manufacture of optical recording media, optical cards, laser printers, near-infrared absorption filters, goggles and the like.
• Conventionally known near-infrared absorbents include cyanine dyes (Japanese Patent Laid-Open Nos. 46221/'81 and 112790/'83), phthalocyanine dyes (Japanese Patent Laid-Open No. 36490/'83), naphthoquinone dyes (Japanese Patent Laid-Open No. 15458/'85), anthraquinone dyes (Japanese Patent Laid-Open No. 291651/'86) and dithiol complexes (Japanese Patent Laid-Open No. 175693/'83).
• cyanine dyes Japanese Patent Laid-Open Nos. 46221/'81 and 112790/'83
• phthalocyanine dyes Japanese Patent Laid-Open No. 36490/'83
• naphthoquinone dyes Japanese Patent Laid-Open No. 15458/'85
• anthraquinone dyes Japanese Patent Laid-Open
• cyanine dyes are insufficient in fastness properties such as light resistance and thermal resistance.
• the absorption wavelength range of phthalocyanine dyes is as short as 600-700 nm.
• Anthraquinone and naphthoquinone dyes have a low molar extinction coefficient of the order of several tens of thousands.
• Dithiol complexes are insufficient in thermal stability and molar extinction coefficient.
• 2,3-naphthalocyanine dyes which are analogous to the near-infrared absorbents of the present invention, have an absorption band at 750 to 800 nm in the dissolved state and absorb light from semiconductor lasers. However, when they are in the form of a film or solid, their absorption band is shifted and the absorption of light (in the wavelength range of 780 to 830 nm) from semiconductor lasers is diminished.
• near-infrared absorbents comprising 1,2-naphthalocyanine derivatives of the formula ##STR1## where the naphthalene rings represented by A, B, C and D may independently have 1 to 6 substituents selected from substituted or unsubstituted alkyl groups, alkoxy groups, alkylthio groups, alkylamino groups, dialkylamino groups, aryl groups, aryloxy groups, arylthio groups, arylamino groups and halogen atoms, and the substituents may be connected with each other; and Met represents two hydrogen atoms, a divalent metal atom, a monosubstituted trivalent metal atom, a disubstituted tetravalent metal atom or an oxymetal group.
• near-infrared absorbents may be used to produce optical recording media containing them in the recording layer thereof, near-infrared absorption filters containing them, and display materials comprising mixtures of them and liquid crystal materials.
• the 1,2-naphthalocyanine derivatives of formula (I) which constitute the near-infrared absorbents of the present invention can be synthesized as follows: One to four intermediates are selected from the compounds represented by the formulas ##STR2## where the naphthalene ring may have one or more substituents similar to those defined for formula (I). In the same manner as for the synthesis of phthalocyanines, the said intermediate or intermediates are reacted, for example, by heating in butanol in the presence of 1,8-diazabicyclo[5,4,0]-7-undecene (DBU). Thus, there can be obtained 1,2-naphthalocyanine derivatives of formula (I).
• DBU 1,8-diazabicyclo[5,4,0]-7-undecene
• Examples of the substituted or unsubstituted alkyl groups with which the naphthalene rings in formula (I) may be substituted include straight-chain or branched hydrocarbon radicals having 1 to 20 carbon atoms; straight-chain or branched alkoxyalkyl groups having a total of 1 to 30 carbon atoms, such as methoxymethyl, ethoxymethyl, methoxyethyl, ethoxyethyl, propoxyethyl, methoxybutyl and phenoxyethyl groups; straight-chain or branched alkylthioalkyl groups having a total of 1 to 30 carbon atoms, such as methylthiomethyl, ethylthioethyl and methylthiobutyl groups; straight-chain or branched alkylaminoalkyl groups having a total of 1 to 30 carbon atoms, such as N-methylaminomethyl, N,N-dimethylaminomethyl, N,N-diethylamin
• substituted or unsubstituted alkoxy groups include straight-chain or branched hydrocarbonoxy groups having 1 to 20 carbon atoms, such as methoxy, ethoxy, propoxy, butoxy pentyloxy, hexyloxy, heptyloxy and octyloxy groups; oligoethyloxy derivatives of the general formula R-(OCHY 1 CHY 2 ) n -O- (where R represents a hydrogen atom or a hydrocarbon radical having 1 to 6 carbon atoms, Y 1 and Y 2 independently represent hydrogen atoms, methyl groups, chloromethyl groups or alkoxymethyl groups, and n is a whole number of 1 to 5), such as methoxyethoxy, ethoxyethoxy, propoxyethoxy, butoxyethoxy, phenoxyethoxy, methoxyethoxyethoxy, ethoxyethoxyethoxy, methoxyethoxyethoxyethoxy, hydroxyethyl
• substituted or unsubstituted alkylthio groups include straight-chain or branched hydrocarbonthio groups having 1 to 30 carbon atoms, such as methylthio and ethylthio groups; oligoalkoxyalkylthio groups such as methoxymethylthio, methoxyethylthio, ethoxyethylthio, butoxyethylthio and methoxyethoxyethylthio groups; oligoalkylthioalkylthio groups such as methylthiomethylthio and ethylthioethylthio groups; alkylaminoalkylthio groups such as N,N-dimethylaminoethylthio, N,N-diethylaminoethylthio and N-methylaminopropylthio groups; and halogenated alkylthio groups such as chloroethylthio, bromoethylthio, io
• substituted or unsubstituted alkylamino and dialkylamino groups include straight-chain or branched alkyl-substituted amino groups having a total of 1 to 30 carbon atoms, such as methylamino, ethylamino, N,N-dimethylamino and N,N-diethylamino groups; hydroxyalkylamino groups such as N-(hydroxyethyl)amino and N,N-di(hydroxyethyl)amino groups; alkoxyalkylamino groups such as N,N-di(methoxyethyl)amino, N,N-di(ethoxyethyl)amino and N,N-di(methoxyethoxyethyl)amino groups; and acyloxyalkylamino groups such as N,N-di(acetoxyethyl)amino group.
• substituted or unsubstituted aryl groups include substituted or unsubstituted phenyl and naphthyl derivatives such as phenyl, naphthyl and tolyl groups; and substituted or unsubstituted heterocyclic radicals derived from thiophene, oxazole, thiazole, thiadiazole, furan, pyrrole, quinoline and pyridine.
• substituted or unsubstituted aryloxy groups include phenyloxy, naphthyloxy, alkylphenyloxy, alkylaminophenyloxy, halogen-substituted phenyloxy, nitrophenyloxy, alkoxyphenyloxy and alkylthiophenyloxy groups.
• substituted or unsubstituted arylthio groups include phenylthio, naphthylthio, alkylphenylthio, aminophenylthio, alkylaminophenylthio and alkoxyphenylthio groups.
• substituted or unsubstituted arylamino groups include anilino, N-alkylanilino, alkylphenylamino, alkoxyphenylamino and alkylaminophenylamino groups.
• halogens include fluorine, chlorine, bromine and iodine. Among those, chlorine is preferred.
• divalent metal represented by Met examples include Cu, Zn, Fe(II), Co(II), Ni(II), Ru(II), Rh(II), Pd(II), Pt(II), Mn(II), Mg(II), Be(II), Ca(II), Ba(II), Cd(II), Hg(II) and Sn(II).
• Examples of the monosubstituted trivalent metal include Al-Cl, Al-Br, Al-F, Al-I, Ga-Cl, Ga-F, Ga-I, Ga-Br, In-Cl, In-Br, In-I, In-F, Tl-Cl, Tl-Br, Tl-I, Tl-F, Al-C 6 H 5 , Al-C 6 H 4 CH 3 , In-C 6 H 5 , In-C 6 H 4 CH 3 , In-C 10 H 7 and Mn(OH).
• disubstituted tetravalent metal examples include CrCl 2 , SiCl 2 , SiBr 2 , SiF 2 , ZrC 12 , SiI 2 , GeCl 2 , GeBr 2 , GeI 2 , GeF 2 , SnCl 2 , SnBr 2 , SnI 2 , SnF 2 , TiCl 2 , TiBr 2 and TiF 2 ; Si(OH) 2 , Ge(OH) 2 , Zr(OH) 2 , Mn(OH) 2 and Sn(OH) 2 ; TiR 2 , CrR 2 , SiR 2 , SnR 2 and GeR 2 where R is an alkyl, phenyl or naphthyl group or a derivative thereof; Si(OR') 2 , Sn(OR') 2 , Ge(OR') 2 , Ti(OR') 2 and Cr(OR') 2 where R' is an alkyl, phenyl, naphthyl
• Examples of the oxymetal group include VO, MnO and TiO.
• the 1,2-naphthalocyanine derivatives contained in the recording layer are compounds having a substituent group at the ⁇ -position of each naphthalene ring as represented by the formula (II) ##STR3## where Y 1 , Y 2 , Y 3 and Y 4 independently represent alkyl groups, alkoxy groups, aryloxy groups, alkylthio groups, arylthio groups or aralkyl groups, and each of these substituent groups may be substituted with one or more halogen atoms, alkoxy groups, alkoxyalkoxy groups, aryloxy groups, alkylthio groups, arylthio groups or cycloalkyl groups.
• each naphthalene ring may also have substituents similar to those defined for formula (I).
• alkyl groups suitable for use as the ⁇ -substituent groups include straight-chain or branched hydrocarbon radicals having 4 to 20 carbon atoms, such as butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, benzyl, 4-butylbenzyl, 4-octylbenzyl, 4-cyclohexylbenzyl, 4-butylcyclohexylbenzyl, phenetyl and cyclohexylmethyl groups.
• alkoxy groups suitable for use as the ⁇ -substituent groups include butoxy, 3-ethylpropoxy, hexyloxy, octyloxy, undecyloxy, methoxyethoxy, ethoxyethoxy, butoxyethoxy, ethoxypropoxy, phenoxyethoxy, ethoxyethoxyethoxy, methoxyethoxyethoxyethoxy, methoxypropoxypropoxy, cyclohexyloxy and 4-butylcyclohexyloxy groups.
• alkylthio groups suitable for use as the ⁇ -substituent groups include butylthio, hexylthio, octylthio, nonylthio, cyclohexylthio, 4-butylcyclohexylthio, ethoxyethylthio and 2,3-diethoxypropylthio groups.
• aryloxy groups suitable for use as the ⁇ -substituent groups include aryloxy groups having a total of 7 to 20 carbon and oxygen atoms, such as phenoxy, 4-butylphenoxy, 3,4-dibutylphenoxy, 4-octylphenoxy, nonylphenoxy, naphthoxy, butylnaphthoxy and 4-butylcyclohexylphenoxy groups.
• arylthio groups suitable for use as the ⁇ -substituent groups include arylthio groups having a total of 7 to 20 carbon and sulfur atoms, such as phenylthio, 4-butylphenylthio, octylphenylthio, naphthylthio and butylnaphthylthio groups.
• the near-infrared absorbents may be coated or vacuum-evaporated onto transparent substrates.
• 0.05 to 20% by weight, preferably 0.5 to 20% by weight, of the near-infrared absorbent and up to 20% by weight, preferably 0%, of a binder resin are dissolved in a solvent, and the resulting solution is applied to a substrate by means of a spin coater.
• the near-infrared absorbent is deposited on a substrate at a pressure of 10 -7 to 10 -5 torr and a temperature of 100 to 300° C.
• the said substrate may be formed of any optically transparent resin.
• Suitable resins include, for example, acrylic resins, polyethylene resin, vinyl chloride resin, vinylidene chloride resin, polycarbonate resins, ethylene resin, polyolefin copolymer resins, vinyl chloride copolymer resins, vinylidene chloride copolymer resins and styrene copolymer resins.
• the substrate may be surface-treated with a thermosetting or ultraviolet-curable resin.
• Solvents suitable for coating purposes include, for example, halogenated hydrocarbons such as dichloromethane, chloroform, carbon tetrachloride, tetrachloroethylene and dichlorodifluoroethane; ethers such as tetrahydrofuran and diethyl ether; ketones such as acetone and methyl ethyl ketone; alcohols such as methanol, ethanol and propanol; cellosolves such as methyl cellosolve and ethyl cellosolve; and hydrocarbons such as hexane, cyclohexane, octane, benzene, toluene and xylene.
• halogenated hydrocarbons such as dichloromethane, chloroform, carbon tetrachloride, tetrachloroethylene and dichlorodifluoroethane
• ethers such as tetrahydrofuran and diethyl
• Suitable resins include, for example, thermoplastic resins such as polystyrene, polymethyl methacrylate, polycarbonates, polyethylene and polypropylene; and thermosetting resins such as CR-39 (a product of PPG Ind.), MR-3 (a product of Mitsui-Toatsu Chemicals Co., Ltd.) and MR-6 (a product of Mitsui-Toatsu Chemicals Co., Ltd.).
• thermoplastic resins such as polystyrene, polymethyl methacrylate, polycarbonates, polyethylene and polypropylene
• thermosetting resins such as CR-39 (a product of PPG Ind.), MR-3 (a product of Mitsui-Toatsu Chemicals Co., Ltd.) and MR-6 (a product of Mitsui-Toatsu Chemicals Co., Ltd.).
• display materials can be produced by mixing 1,2-naphthalocyanine derivatives of formula (I) with liquid crystal materials such as nematic liquid crystals, smectic liquid crystals and cholesteric liquid crystals. These display materials may be used in guest-host type displays, liquid crystal panels (in which a near-infrared absorbent is incorporated in the liquid crystal and an image is written with a laser beam), and the like.
• optical recording medium One (1) part by weight of the above compound was dissolved in 100 parts by weight of benzene, and the resulting solution was spin-coated onto a substrate to obtain an optical recording medium.
• This optical recording medium exhibited a C/N ratio of 60 dB and, moreover, had high sensitivity.
• a liquid crystal panel was made by using an alkylcyanobiphenyl liquid crystal material of the general formula ##STR4## (where R is an alkyl group) and incorporating therein 0.7% by weight of the 1,2-naphthalocyanine derivative obtained in Example 1.
• R is an alkyl group
• a liquid crystal panel in which the 1,2-naphthalocyanine derivative was not incorporated was also made.
• the thickness of the liquid crystal layer was 10 ⁇ m.
• the liquid crystal panel of the present invention gave a greater writing line width than the conventional liquid crystal panel.
• the liquid crystal panel of the present invention permitted the light pen to write a line of 160 ⁇ m width at a light pen traveling speed of 2 cm/sec.
• the said 1,2-naphthalocyanine derivative could be dissolved in the alkylcyanobiphenyl liquid crystal material at a concentration up to about 2% by weight, and various weathering tests revealed that it had a very long life.
• the liquid crystal material containing the 1,2-naphthalocyanine derivative was filled into capsules, which were allowed to stand under direct sunlight for 100 hours. Thereafter, the liquid crystal material was examined for absorbance and absorption spectrum, but no change was observed. Thus, the 1,2-naphthalocyanine derivative was found to be very stable.
• One (1) part by weight of the 1,2-naphthalocyanine derivative obtained in Example 1 was dissolved in 10 parts by weight of chloroform, and this solution was coated onto a glass substrate to form a near-infrared absorption filter.
• This filter had excellent weather resistance.
• optical recording medium One (1) part by weight of the above compound was dissolved in 100 parts by weight of benzene, and the resulting solution was spin-coated onto a substrate to obtain an optical recording medium.
• This optical recording medium exhibited a C/N ratio of 60 dB and, moreover, had high sensitivity.
• One (1) part by weight of the above compound was dissolved in 100 parts by weight of benzene, and the resulting solution was spin-coated onto a substrate to obtain an optical recording medium.
• this optical recording medium exhibited a C/N ratio of 60 dB at a power of 8 mW. No change was observed after the record was reproduced 1,000,000 times with a 0.5 mW beam of light. Moreover, reproduction of the record was not interfered with even after the optical recording medium was allowed to stand at a temperature of 80° C. and a relative humidity of 80% for 1,000 hours.
• optical recording medium had high sensitivity.
• optical recording medium had high reflectance, sensitivity and stability.
• the near-infrared absorbents of the present invention have excellent moisture resistance, thermal resistance and light resistance, as well as good compatibility with various resins. Moreover, recording and display materials using the near-infrared absorbents of the present invention have high sensitivity and good durability.

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• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Thermal Transfer Or Thermal Recording In General (AREA)
• Optical Record Carriers And Manufacture Thereof (AREA)
• Liquid Crystal (AREA)
• Optical Filters (AREA)

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• 1988
  • 1988-10-14 DE DE88117163T patent/DE3882894T2/de not_active Expired - Fee Related
  • 1988-10-14 EP EP8888117163A patent/EP0313943B1/de not_active Expired - Lifetime
  • 1988-10-19 JP JP63261357A patent/JPH0243269A/ja active Granted
  • 1988-10-20 KR KR1019880013662A patent/KR910006770B1/ko not_active IP Right Cessation
  • 1988-10-20 US US07/260,038 patent/US4960538A/en not_active Expired - Fee Related

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